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FixedPros > THE FINAL COUNTDOWN > Flashcards

THE FINAL COUNTDOWN Flashcards

1
Q

Parallel pins: they parallel the _____ __ ______ with the pins being part of the ______ ________.

A

path of insertion….cast restoration

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2
Q

Non-parallel pins: placed in the tooth to retain a _____

A

core build up

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3
Q

Pins for core retention: place in sound ______ and do not undermine ______

A

DENTIN…ENAMEL

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4
Q

Pins for core retention: Place ______ between the outer surface of the pulp

A

halfway

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5
Q

Pins for core retention: **sorround by at least ___mm of dentin

A

0.5mm

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6
Q

WHERE is the safest location to place a pin for core retention?

A

line angles/corners of the teeth

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7
Q

Core pins-THREADED place __mm deep

A

2mm

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8
Q

core pins-CEMENTED place __mm deep

A

4mm

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9
Q

Which pin is more retentive-threaded or cemented?

A

THREADED

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10
Q

Threaded pins are _____ than their respective hole, and cemented pins are _____ than their respective hole

A

threaded are LARGER….cemented are smaller (to fit cement)

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11
Q

When the sulk are normal and healthy and bands of attached gingival are adequate, margins can be placed up to ___mm inside the sulcus

A

0.5mm

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12
Q

What is biological width in mm? What two anatomical tissues make it up?

A

2.04mm…Junctional Epithelium + Connective Tissue (so from the attachment of the gingiva to the crest of the alveolar bone)

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13
Q

Grooves are placed __mm deep and __mm wide in “buik tooth structure” (looks like dentin mainly)

A

1mm, 1mm…dentin

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14
Q

Failure rates for endodontically treated teeth: single crown: __%, FPD abutment: __%…RPD abutment ___%

A

single crown 5%, FPD abutment 11%….RPD abutment 23%

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15
Q

Using a post in an endo treated tooth is NOT to _______ the tooth, but only to _______ the core material.

A

reinforce the tooth….retain the core material

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16
Q

FERRULE-when placing a crown over a core build up, you need a minimum of ___mm of crown length past the margin of a core build up…IDEAL is ___mm

A

1.5mm minimum…IDEAL 2.0mm

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17
Q

Post diameter should be ___ of the root diameter, Post length should be ___ the length of the root

A

1/3 diameter…2/3 length

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18
Q

Maintain at least ___mm of apical seal when placing a post, but the post length must be at least _____ to the length of the crown

A

4mm…equal

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19
Q

Active post- has _______ to engage dentin, RANK its retention??, made of ____

A

threads….BEST retention….metal

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20
Q

passive post-______ in diameter than the drill diameter and it is adhesively _____ to the tooth

A

smaller…adhesively

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21
Q

hybrid post- ACTIVE at the ______ area, PASSIVE at the _____ area, made of _____, and helps with mechanical _______

A

HYBRID = ACTIVE AT CORONAL, passive at apical area…made of metal…mechanical retention

22
Q

“extrude a tooth” for restoration, what determines how far we need to extrude the tooth?

A

biological width

23
Q

What is the most aesthetically pleasing pontic form?

A

ovate

24
Q

What are the two types of poetics that DO NOT contact the gingiva? How far are they from the ridge?

A

sanitary and modified sanitary…2mm

25
Q

What is the advantage of the modified sanitary pontic form?

A

Broader connectors

26
Q

In a non-ridged connector, the keyway is on the ______ and the key is on the ______

A

keyway = retainer, key=pontic

27
Q

PINS need to be surrounded by ___mm of sound dentin

A

0.5mm

28
Q

Treat an asymptomatic tooth endodontically for ______/ to have a dowel.

A

retention..wow thats cray cray yo

29
Q

The ideal ratio for FPD retainers is a ___:___ clinical crown:root surface ratio.

A

clinical crown 2:root surface 3

30
Q

What law? Root surface area of the abutment teeth had to be equal or surpass that of the
teeth being replaced with pontics.

A

Ante’s law

31
Q

Size of connectors- posterior

A

2mm O-G, 3mm B-L

32
Q

Size of connector-anterior

A

3mm I-G ,2mm B-L

33
Q

What is time you have to mix the material?

A

mixing time

34
Q

What is time before material begins to set; starts from the time you began mixing and includes the time you have to load material into tray or syringe

A

working time

35
Q

What is Time it takes for material to be completely set (from start to finish)

A

setting time

36
Q

What type of PROVISIONAL LUTING cement is SELF CURE? give 2 examples.

A

ZINC OXIDE based….Tempbond and Tempbone NE

37
Q

What type of PROVISIONAL luting cement is DUAL cure? Give 2 examples.

A

Resin based…Tempbond Clear, ProViLink

38
Q

How thick is provisional cement?

A

25 microns

39
Q

When do you sandblast a crown?

A

after the initial try in and before cementing

40
Q

PERMANENT CEMENTS-oldest cement used, does not bond, easy to clean

A

ZINC PHOSPHATE

41
Q

POLYCARBOXYLATE Cement- made of ______, introduced in 1968. does it penetrate dentin? How much time do you have? is it a good PERMANENT luting cement?

A

ZINC OXIDE….does NOT penetrate dentin, have 30 freaking seconds, not recommended for permanent cement

42
Q

G.I. cements-ADHERES to ____ and_____…Disadvantages-intial _____ setting, ______ sensitive, post-cementation _______

A

enamel and dentin…intital SLOW setting, MOISTURE sensitive, post-cementation SENSITIVITY

43
Q

What is the BIGGEST DISADVANTAGE to Resin Modified G.I. luting cement?

A

possible fracture, it expands

44
Q

Resin luting cements- VERY _______ SENSITIVE

A

TECHNIQUE

45
Q

Shrinkage-gold-__%

A

1.5%

46
Q

shrinkage- Ni-Cr ___%

A

2.4%

47
Q

Impression trays: A device used to _____, ______, and _____ impression material while making an impression

A

carry, confine, control

48
Q

Custom trays- ROOM ___mm to ___mm for PVS, ___INCH for alginate

A

2mm-4mm PVS, 1/4inch alginate

49
Q

Custom tray-___mm apical to crest of Free Gingiva, stops are ___ degree angle

A

5mm…45 degree

50
Q

Custom incised guide table prevents fracture of the _____ during crown fabrication, does the pin touch the table?

A

stone…NO

51
Q

What are the three MUNSELL color system components?

A

HUE, CHROMA, VALUE

52
Q

What are the three ways to get the Pt to CR?

A

1.Chin point guidance 2.BiManual Manipulation 3.Unguided-with leaf point

FixedPros (13 decks)

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